Yes,

Its one unique ID per device which doesn't change.

thats to bad, i read a feature request for a option to be able to set the MQTT clientid as the device id. that would be great. But to answer your question, IBM Watson requiers a clientID for clients publishing data, in the format : d:orgId:deviceType:deviceId so for example d:3m11xb:sensors:temp078

Hi all, We use a couple off devices with ESP Easy to send sensor data thru MQTT to our local broker. This all works great, but we now want to send some mqtt data to IBM Watson broker. This requires a verry specific ClientId, username, password for connected devices. Is it possible to manually set th...